Jackson County, Iowa · Frost dates
Jackson County frost dates.
First-frost, last-frost, and growing-season length for Jackson County, Iowa. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-09
- 20%
- 05-05
- 50%
- 04-25
- 80%
- 04-15
- 90%
- 04-11
First fall frost
- 10%
- 09-30
- 20%
- 10-05
- 50%
- 10-14
- 80%
- 10-22
- 90%
- 10-26
28°F — killing freeze
Last spring freeze
- 10%
- 05-01
- 20%
- 04-25
- 50%
- 04-14
- 80%
- 04-05
- 90%
- 04-02
First fall freeze
- 10%
- 10-10
- 20%
- 10-15
- 50%
- 10-24
- 80%
- 10-31
- 90%
- 11-04
Growing season length (days, 28°F threshold)
- Short year
- 162
- Median
- 193
- Long year
- 216
Source NOAA station
MAQUOKETA, IA US
7.6 mi · 30 yrs of record (1991–2020) · 668 ft elev.
Data from MAQUOKETA, IA US, 7.6 miles away with 30-year NOAA record (1991-2020).
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